Coarse and fine adjustment combined pressure annunciator

A pressure signal, combined technology, applied in the direction of machine/engine, jet propulsion device, rocket engine device, etc., can solve the problems of low pass rate and difficulty in adjusting the pressure signal device, so as to improve the accuracy and pass rate, and solve the problem of adjustment. point difficult effect

Active Publication Date: 2013-06-19
BEIJING INST OF ASTRONAUTICAL SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, provide a pressure signal device with a combination of coarse and fine adjustment, solve the problems of difficult point adjustment and low pass rate of the pressure signal device used for launch vehicles, and improve the pressure control accuracy

Method used

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  • Coarse and fine adjustment combined pressure annunciator

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0013] Such as figure 1 Shown is a schematic structural diagram of a pressure signal device combined with coarse and fine adjustment in the present invention. It can be seen from the figure that the pressure signal device includes a socket 1, a housing 2, a micro switch 3, a hard core 4, a nozzle 9, and a diaphragm 5 , Disc spring 10, adjusting screw sleeve 11 and limit screw sleeve 12, also includes adjusting spring 6, spring disc 7 and adjusting bolt 8. The spring 6 is compressed by the diaphragm 5 and the spring plate 7, the spring plate 7 is limited by the bolt 8, the nozzle 9 is connected with the housing 2 through the external thread, and the diaphragm 5 is compressed by the housing 2 and the nozzle 9 to ensure the seal. The hard core 4 is placed on the diaphragm 5, the inner side of the disc spring 10 is placed on the hard core 4, the ou...

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PUM

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Abstract

The invention relates to a coarse and fine adjustment combined pressure annunciator. The annuciator comprises a socket, a shell, a micro switch, a hard core, a membrane, a regulation spring, a spring disc, an adjusting bolt, a nozzle, a disc spring, an adjusting nut and a limit swivel nut, wherein the work pressure is controlled by the disc spring serving as a sensitive element, and the adjustingnut and the limit swivel nut are matched to realize the coarse adjustment for a working pressure point; the adjusting spring, the spring plate and the adjusting bolt are added based on the coarse adjustment, the adjusting spring is compacted by the membrane and the spring plate, and the spring plate is limited by the bolt; and the fine adjustment for the work pressure point can be realized by rotating the adjusting bolt. Therefore, the pressure annunciator solves the problems of difficult point adjustment, low accuracy and low product qualification rate of the conventional pressure annunciator, and improves the accuracy and qualification rate of the product.

Description

technical field [0001] The invention relates to a pressure annunciator, in particular to a pressure annunciator combining coarse and fine adjustment. Background technique [0002] The pressure annunciator is an important unit in the booster delivery system of the rocket engine. Its function is to sense the pressure of the tank and control the opening and closing of the solenoid valve, thereby controlling the pressure of the tank and ensuring the normal operation of the engine. The pressure signal device used in the pressurized conveying system of the launch vehicle only relies on the thread to adjust the working pressure, which makes it difficult to adjust the pressure point, and the product qualification rate is not high, which affects the production progress and product reliability. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, provide a pressure signal device with a combination o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/00
Inventor 石朝锋丁建春刘春姐刘文川崔景芝娄路亮周浩洋马飞周智勇何延文
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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